Figure 12. Decoding probability of chosen and unchosen forward regions while the rat passed through the choice point. *A*, Decoding probability of chosen and unchosen forward regions under saline. Decoding probability between chosen and unchosen paths differentiated before rats entered the chosen path on non-VTE laps, but only after entering the chosen path on VTE laps. *B*, Decoding probability of chosen and unchosen paths under clonidine. Clonidine hastened the differentiation of decoding probabilities, including moving the first significant decoding difference on VTE laps to before the rat had left the choice point. **p* < 0.0025, chosen versus unchosen sides. Black represents non-VTE; blue represents VTE (saline); red represents VTE (clonidine), all indicating where the chosen sides were better represented than the unchosen side. †*p* < 0.0025, non–VTE-unchosen versus VTE-unchosen, indicating that, on certain VTE laps, the unchosen side contains increased representations relative to that expected from non-VTE laps. Data are mean ± SE. *C*, *D*, Difference of decoding probability was calculated as *p*[chosen] − *p*[unchosen]. *C*, Difference of decoding probability under saline. Decoding probability of the chosen path was larger than the unchosen path before rats entered the chosen path on non-VTE laps (left), but only afterward on VTE laps (right). *D*, Difference of decoding probability under clonidine. The differentiation of decoding probabilities between chosen and unchosen paths appeared earlier on both non-VTE (left) and VTE laps (right), including before the rat left the choice point. ^{#}*p* < 0.0025, probability different from zero. Data are mean ± SE.